11 USC § 305 – Abstention

(a) The court, after notice and a hearing, may dismiss a case under this title, or may suspend all proceedings in a case under this title, at any time if—
(1) the interests of creditors and the debtor would be better served by such dismissal or suspension; or
(2)
(A) a petition under section 1515 for recognition of a foreign proceeding has been granted; and
(B) the purposes of chapter 15 of this title would be best served by such dismissal or suspension.
(b) A foreign representative may seek dismissal or suspension under subsection (a)(2) of this section.
(c) An order under subsection (a) of this section dismissing a case or suspending all proceedings in a case, or a decision not so to dismiss or suspend, is not reviewable by appeal or otherwise by the court of appeals under section 158 (d), 1291, or 1292 of title 28 or by the Supreme Court of the United States under section 1254 of title 28.